Hi, My Husband Just Informed Me That For The Past

Hi, my husband just informed me that for the past couple of days whenever he would scratch himself (his back for example) he wouldn't feel it. He would know that he is touching his back but it wouldn't feel as though he was itching his back and the itch wouldn't go away. He is currently taking steroids (Sustanon and Equipose) and has been for some time. I'm not sure if take related to that or if it could be another issue. He workouts at the gym everyday and eats very healthy. Please give us something as to what it could be! Thank you so much!